7.6.2 U6 Time‑of‑Flight (ToF) sensor
U6 VL53L0CXV0DH/1 is a device that allows measuring the Time‑of‑Flight (ToF) of a laser beam. It is connected
to the STM32W5MMG through the I
2
C interface.
This sensor can make a distance measurement and obstacle detection until two meters, and 1D‑gesture
recognition.
Figure 11. Direction, angle, and side operating
VL53L0CXV0DH/1 contains a laser emitter and the corresponding drive circuitry. The laser output is designed
to remain within Class 1 laser safety limits under all reasonably foreseeable conditions including single faults
in compliance with IEC 60825-1:2014 (third edition). The laser output remains within Class 1 limits as long as
the STMicroelectronics recommended device settings are used and the operating conditions specified in the
STM32WB datasheets are respected. The laser output power must not be increased by any means and no optics
used to focus the laser beam. Figure 12 shows the warning label for Class 1 laser products.
Figure 12. Class 1 laser product label
Table 12. U6 Time‑of‑Flight sensor I
2
C address
Device
Action Address
VL53L0CXV0DH/1
Read
0b01010011 (53h)
Write
0b01010010 (52h)
UM2825
Embedded sensors
UM2825 - Rev 1
page 20/42
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